AU2002238913A1 - Optical recording medium and optical information processor - Google Patents

Optical recording medium and optical information processor

Info

Publication number
AU2002238913A1
AU2002238913A1 AU2002238913A AU2002238913A AU2002238913A1 AU 2002238913 A1 AU2002238913 A1 AU 2002238913A1 AU 2002238913 A AU2002238913 A AU 2002238913A AU 2002238913 A AU2002238913 A AU 2002238913A AU 2002238913 A1 AU2002238913 A1 AU 2002238913A1
Authority
AU
Australia
Prior art keywords
optical
recording medium
information processor
optical recording
optical information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
AU2002238913A
Inventor
Michio Matsuura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of AU2002238913A1 publication Critical patent/AU2002238913A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24073—Tracks
    • G11B7/24082—Meandering
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0901—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following only
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0938—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following servo format, e.g. guide tracks, pilot signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24073—Tracks
    • G11B7/24079—Width or depth
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08541—Methods for track change, selection or preliminary positioning by moving the head involving track counting to determine position
AU2002238913A 2002-03-14 2002-03-14 Optical recording medium and optical information processor Abandoned AU2002238913A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2002/002449 WO2003077241A1 (en) 2002-03-14 2002-03-14 Optical recording medium and optical information processor

Publications (1)

Publication Number Publication Date
AU2002238913A1 true AU2002238913A1 (en) 2003-09-22

Family

ID=27799930

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002238913A Abandoned AU2002238913A1 (en) 2002-03-14 2002-03-14 Optical recording medium and optical information processor

Country Status (5)

Country Link
US (1) US7161892B2 (en)
JP (1) JP4084308B2 (en)
AU (1) AU2002238913A1 (en)
TW (1) TWI228248B (en)
WO (1) WO2003077241A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007083837A1 (en) * 2006-01-23 2007-07-26 Ricoh Company, Ltd. Optical recording medium

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1125461A (en) * 1997-07-01 1999-01-29 Seiji Yonezawa Optical disk and its recording and reproducing device
DE69834708T2 (en) * 1997-12-26 2007-04-26 Kabushiki Kaisha Toshiba, Kawasaki Optical disc and optical disc device
JP2000132850A (en) * 1998-10-23 2000-05-12 Pioneer Electronic Corp Recording information reproducing device
US6434096B1 (en) * 1999-02-26 2002-08-13 Matsushita Electric Industrial Co., Ltd. Optical information recording/reproducing device
JP2000331383A (en) 1999-05-17 2000-11-30 Sony Corp Optical recording medium, tracking control method, tracking controller and formation of groove
JP2001014730A (en) * 1999-06-28 2001-01-19 Sony Corp Optical recording medium, master disk for production of optical recording medium and optical recording and reproducing device
JP3658252B2 (en) * 1999-10-01 2005-06-08 シャープ株式会社 Optical disc recording / reproducing apparatus
US6885620B2 (en) * 2001-01-25 2005-04-26 Dphi Acquisitions, Inc. System and method for recovering from performance errors in an optical disc drive

Also Published As

Publication number Publication date
JPWO2003077241A1 (en) 2005-07-07
JP4084308B2 (en) 2008-04-30
US20050128929A1 (en) 2005-06-16
US7161892B2 (en) 2007-01-09
WO2003077241A1 (en) 2003-09-18
TWI228248B (en) 2005-02-21

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase